US20110037039A1 - Elevation mechanism - Google Patents
Elevation mechanism Download PDFInfo
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- US20110037039A1 US20110037039A1 US12/609,295 US60929509A US2011037039A1 US 20110037039 A1 US20110037039 A1 US 20110037039A1 US 60929509 A US60929509 A US 60929509A US 2011037039 A1 US2011037039 A1 US 2011037039A1
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- members
- sliding
- scissor
- fixing
- threaded
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
- B66F3/22—Lazy-tongs mechanisms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
- B66F7/10—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported directly by jacks
- B66F7/12—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported directly by jacks by mechanical jacks
- B66F7/14—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported directly by jacks by mechanical jacks screw operated
Definitions
- the present disclosure relates to elevation mechanisms, and particularly, to an elevation mechanism utilizing a scissor lift support.
- Elevation mechanisms have been widely used in many applications for many years, such as, or example, elevating automobiles, building components, supplies, structural components, scaffolding, work stands, patient beds and many others.
- a commonly used elevation mechanism includes a base assembly, a platform, and a scissor lift assembly movably interconnecting the base assembly and the scissor lift assembly.
- the base assembly includes a support member, a threaded rod and a threaded member.
- the threaded rod is fixed on the support member.
- the threaded member sleeves on the threaded rod.
- the scissor lift assembly includes a scissor support and a wheel.
- the scissor support includes a first scissor leg and a second scissor leg pivotedly attached to the first scissor leg in a middle portion.
- the wheel is pivotedly connected to an end of the first scissor leg.
- the threaded member is pivotedly connected to the other end of the first scissor leg.
- the platform and the support member are correspondingly pivotedly connected to opposite ends of the second scissor leg.
- the platform defines a retaining groove to receive the wheel.
- FIG. 1 is an assembled, isometric view of a first embodiment of an elevation mechanism including a base assembly, a scissor lift assembly, a sliding assembly, and a platform.
- FIG. 2 is a partial, exploded, isometric view of the elevation mechanism shown in FIG. 1 .
- FIG. 3 is an exploded, isometric view of the base assembly of the elevation mechanism shown in FIG. 1 .
- FIG. 4 is an exploded, isometric view of the scissor lift assembly of the elevation mechanism shown in FIG. 1 .
- FIG. 5 is an exploded, isometric view of the sliding assembly of the elevation mechanism shown in FIG. 1 .
- FIG. 6 is an assembled, isometric view of a second embodiment of an elevation mechanism.
- FIG. 7 is an assembled, isometric view of a third embodiment of an elevation mechanism.
- a first embodiment of an electronic device 100 as disclosed includes a base assembly 10 , a scissor lift assembly 20 , a sliding assembly 30 , a platform 40 , and a drive device 50 .
- the scissor lift assembly 20 movably interconnects the base assembly 10 and the sliding assembly 30 .
- the platform 40 is positioned on the sliding assembly 30 .
- the drive device 50 is connected to the base assembly 10 to drive the scissor lift assembly 20 .
- the base assembly 10 includes two support members 11 , a threaded rod 12 , two threaded members 13 , two guide rods 14 , two pairs of sleeves 15 , and two sliding members 16 .
- Two ends of the threaded rod 12 correspondingly pass through the two support members 11 .
- the threaded rod 12 is sleeved with the two threaded members 13 .
- the two guide rods 14 are fixed between the two support members 11 , parallel to the threaded rod 12 .
- Each of the guide rods 14 are sleeved with one pair of the sleeves 15 .
- the two sliding members 16 are fixed to the two threaded members 13 , and attached on the two pairs of sleeves 15 correspondingly.
- the two sliding members 16 are slidable relative to the threaded rod 12 and the guide rods 14 .
- Each support member 11 includes a base 113 and a connecting portion 115 .
- the connecting portion 115 extends from a middle portion of a side surface of the base 113 outward.
- the base 113 defines two through holes 1131 and two slots 1132 in opposite ends of the base 113 .
- the two slots 1132 communicate with the corresponding through holes 1131 .
- the connecting portion 115 defines a stepped hole 1151 in a middle portion of the connection portion 115 .
- the threaded rod 12 includes a main body 121 and two threaded portions 123 , 124 .
- the two threaded portions 123 , 124 are formed at opposite ends of the main body 121 . Rotation in a forward direction of the threaded portion 123 is opposite to that of the threaded portions 124 .
- the two threaded members 13 threadedly engage with the corresponding threaded portions 123 , 124 .
- Each sleeve 15 includes a barrel portion 151 and a fixing portion 152 .
- the fixing portion 152 connects an end of the barrel portion 151 .
- Each sliding member 16 includes a baseplate 161 and two connecting portions 162 .
- the two connecting portions 162 are fixed to opposite ends of a side of baseplate 161 .
- the threaded member 13 is fixed to the baseplate 161 between the two connecting portions 162 .
- Each connecting portion 162 defines a through hole 1621 in a middle portion of each connecting portion 162 .
- Each connecting portion 162 further defines a gap 1622 in an end of each connecting portion 162 .
- the gap 1622 communicates with the through hole 1621 .
- the sleeves 15 are received in the guide rods 14 in the corresponding through holes 1621 of the sliding member 16 .
- the scissor lift assembly 20 includes a plurality of scissor supports 21 , two first connecting members 22 , two second connecting members 23 , two fixing members 24 , a plurality of springs 25 , and a plurality of fixing shafts 26 .
- the scissor supports 21 are pivotedly connected to one another.
- the fixing shafts 26 correspondingly pass through the first connecting member 22 and the second connecting member 23 , and are finally fixed to the fixing members 24 .
- the fixing shafts 26 are sleeved with the corresponding springs 25 .
- Fixing shafts 26 may be rivets, bolts, screw fasteners, or other.
- Each scissor support 21 includes two first scissor legs 212 , a second scissor leg 214 , and a pivotal shaft 216 .
- the second scissor leg 214 is positioned between the two first scissor legs 212 .
- the pivotal shaft 216 passing through a middle portion of one of the first scissor legs 212 , the second scissor leg 214 , and the other first scissor leg 212 in that order.
- the outermost first scissor legs 212 of the scissor lift assembly 20 are correspondingly pivotedly connected to one of the first connecting members 22 and one of the second connecting members 23 .
- the outermost second scissor legs 214 of the scissor lift assembly 20 are correspondingly pivotedly connected to the other first connecting members 22 and the other second connecting members 23 .
- Each first connecting member 22 includes a fixing portion 221 and a connecting portion 223 .
- the connecting portion 223 extends from a middle portion of the fixing portion 221 outward.
- the fixing portion 221 defines a plurality of the stepped holes 2213 and two positioning steps 2215 .
- the stepped holes 2213 are defined in a side of the fixing portion 221 at two sides of the connecting portion 223 .
- the two positioning steps 2215 are defined in opposite ends of the other side of the fixing portion 221 adjoining the side defining the stepped holes 2213 .
- the connecting portions 223 are pivotedly connected to free end of the first outermost scissor leg 212 .
- Each second connecting member 23 includes two fixing portions 231 and a connecting portion 233 .
- the two connecting portions 233 extend from a middle portion of the fixing portion 231 , and are spaced from each other.
- the fixing portion 231 defines a plurality of the stepped holes 2313 and two positioning steps 2315 .
- the stepped holes 2313 are defined in the side of the fixing portion 221 at two sides of the connecting portion 233 .
- the two positioning steps 2315 are defined in opposite ends of the other side of the fixing portion 231 adjoining the side defining the stepped holes 2213 .
- the connecting portions 233 are pivotedly connected to free end of the outermost second scissor leg 214 .
- Each fixing member 24 includes a base 242 and two positioning portions 244 .
- the two positioning portions 244 extend from a side of the base 242 , and are spaced apart at the two ends of a side of the base 242 .
- the two positioning portions 244 of one fixing member 24 engage with the corresponding positioning steps 2215 of the first connecting member 22 .
- the two positioning portions 244 of other fixing member 24 engage with the corresponding positioning steps 2315 of the second connecting member 23 .
- Each spring 25 is substantially cylindrical, and is partially received in the respective stepped hole 2213 of the first connecting member 22 or the respective stepped hole 2313 of the second connecting member 23 .
- the sliding assembly 30 includes two sliding rods 31 , two pairs of sleeves 32 , two sliding members 33 , and two fixing members 34 .
- the two sliding rods 31 are fixed between the two fixing members 34 , parallel to each other.
- the two sliding rods 31 are correspondingly sleeved with two pairs of sleeves 32 .
- the two sliding members 33 are correspondingly sleeved with the two pairs of sleeves 32 , and can be slid relative to the sliding rods 31 .
- Each sleeve 32 includes a barrel portion 321 and a fixing portion 323 .
- the fixing portion 323 connects the barrel portion 321 .
- Each sliding member 33 defines two through holes 331 in opposite ends of the corresponding sliding member 33 .
- the barrel portions 321 are received in the corresponding through holes 331 of the sliding members 33 .
- Each fixing member 34 defines two fixing holes 341 and two slots 342 in opposite ends of the corresponding fixing member 34 .
- the two slots 342 communicate with the corresponding through holes 341 .
- the drive device 50 is an actuator motor.
- the drive device 50 is pivotally connected to and rotates the threaded rod 12 .
- the elevation mechanism 100 may be assembled as follows.
- Two threaded portions 123 , 124 of the threaded rod 12 are first sleeved with the threaded members 13 .
- the two guide rods 14 are then correspondingly sleeved with the corresponding sleeves 15 .
- the two ends of the two guide rods 14 are fixed in the corresponding through holes 1131 of the two support members 11 .
- the two ends of the threaded rod 12 are received in the corresponding stepped holes 1151 of the two support members 11 .
- the baseplates 161 of the two sliding members 16 are fixed to the corresponding threaded members 13 .
- the connecting portions 162 of the two sliding members 16 sleeved the corresponding sleeves 15 .
- the plurality of scissor supports 21 are pivotedly connected to one another.
- the two first connecting members 22 are correspondingly pivotedly connected to free end of the outermost first scissor legs 212 of the scissor lift assembly 20 .
- the two second connecting members 23 are correspondingly pivotedly connected to free end of the outermost second scissor legs 214 of the scissor lift assembly 20 .
- Some of the fixing shafts 26 correspondingly pass through the lowermost first connecting member 22 of the scissor lift assembly 20 , the springs 25 , and the fixing member 24 .
- the other fixing shafts 26 correspondingly pass through the lowermost second connecting member 23 of the scissor lift assembly 20 , the springs 25 , and the fixing member 24 .
- the lower ermost first and second connecting member 22 , 23 of the scissor lift assembly 20 can be slid relative to the fixing members 24 , and resist the springs 25 .
- the two pairs of sleeves 32 are sleeved with the corresponding sliding rods 31 .
- the two sliding members 33 are sleeved with the corresponding sleeves 32 .
- the two ends of the two sliding rods 31 are fixed in the corresponding fixing holes 341 of the two fixing members 34 .
- the two fixing members 24 of the scissor lift assembly 20 are fixed to the corresponding sliding members 16 of the base assembly 10 .
- the two sliding members 33 of the sliding assembly 30 are correspondingly fixed to the uppermost first and second connecting member 22 , 23 of the scissor lift assembly 20 .
- the platform 40 is fixed to the two fixing members 34 of the sliding assembly 30 .
- the sliding members 33 can be slid toward or away from each other, such that the support center of the platform 40 does not deviate when supporting heavy loads.
- the threaded rod 12 includes two threaded portions 123 , 124 engaging with the two threaded members 13 , which in turn drive the scissor lift assembly 30 to lift more quickly.
- the springs 25 on the corresponding fixing shafts 26 resist the corresponding fixing members 24 , and thus provide a resilient buffering force to the scissor lift assembly 20 .
- the guide rods 14 , the sleeves 15 and the sliding members 16 can also be omitted, wherein the first scissor leg 212 and the second scissor leg 214 at the bottom of the scissor lift assembly 20 are pivotedly connected to the corresponding threaded members 13 .
- the sliding members 33 can also be omitted, wherein the first scissor leg 212 and the second scissor leg 214 at the top of the scissor lift assembly 20 are pivotedly connected to the corresponding sleeves 32 .
- the first connecting members 22 can also be the same as the second connecting members 23 , in which case the scissor support 21 includes same numbers of first scissor leg 212 and second scissor leg 214 .
- Sliding rod 31 can also be only singular, wherein the number of sleeves 32 is two.
- a second embodiment of an elevation mechanism 200 differs from the elevation mechanism 100 only in the inclusion of a fixing frame 60 .
- the fixing frame 60 includes a baseplate 61 , a support bracket 62 , and two guide rods 63 .
- the support bracket 62 is fixed to the baseplate 61 .
- the two guide rods 63 fixedly interconnect the baseplate 61 and the support bracket 62 , and pass through the platform 70 .
- the platform 70 is slidable relative to guide rods 63 .
- a third embodiment of a elevation mechanism 300 differs from the first embodiment of the elevation mechanism 100 only in that scissor lift assembly 80 includes only singular scissor support 81 , which includes a first scissor leg 812 and a second scissor leg 814 pivotedly connected to the first scissor leg 812 , and an end of the second scissor leg 814 is pivotedly connected to one of the support members 87 , and further in that base assembly 90 further includes a handle 94 and only singular threaded member 93 .
- the handle 94 is fixed to the threaded rod 93 , and rotates the threaded rod 93 .
Abstract
Description
- 1. Technical Field
- The present disclosure relates to elevation mechanisms, and particularly, to an elevation mechanism utilizing a scissor lift support.
- 2. Description of the Related Art
- Elevation mechanisms have been widely used in many applications for many years, such as, or example, elevating automobiles, building components, supplies, structural components, scaffolding, work stands, patient beds and many others.
- A commonly used elevation mechanism includes a base assembly, a platform, and a scissor lift assembly movably interconnecting the base assembly and the scissor lift assembly. The base assembly includes a support member, a threaded rod and a threaded member. The threaded rod is fixed on the support member. The threaded member sleeves on the threaded rod. The scissor lift assembly includes a scissor support and a wheel. The scissor support includes a first scissor leg and a second scissor leg pivotedly attached to the first scissor leg in a middle portion. The wheel is pivotedly connected to an end of the first scissor leg. The threaded member is pivotedly connected to the other end of the first scissor leg. The platform and the support member are correspondingly pivotedly connected to opposite ends of the second scissor leg. The platform defines a retaining groove to receive the wheel. When the threaded rod is rotated in a clockwise direction, the threaded member slides the threaded rod to toward the end of the second scissor leg. An angle of the first scissor leg relative to the second scissor leg is increased, such that the scissor lift assembly raises the platform. When the threaded rod is rotated in a counterclockwise direction, the threaded member slides the threaded rod away from the end of the second scissor leg. An angle of the first scissor leg relative to the second scissor leg is decreased, such that the scissor lift assembly lowers the platform. However, the support center of the platform deviates to an edge of the platform as the wheel slides toward the edge of the platform, such that a heavy load cannot be stably supported on the platform.
- Therefore, there is room for improvement within the art.
- The components in the drawings are not necessarily drawn to scale, the emphasis instead being placed upon clearly illustrating the principles of the present disclosure. Moreover, in the drawings, like reference numerals designate corresponding parts throughout several views, and all the views are schematic.
-
FIG. 1 is an assembled, isometric view of a first embodiment of an elevation mechanism including a base assembly, a scissor lift assembly, a sliding assembly, and a platform. -
FIG. 2 is a partial, exploded, isometric view of the elevation mechanism shown inFIG. 1 . -
FIG. 3 is an exploded, isometric view of the base assembly of the elevation mechanism shown inFIG. 1 . -
FIG. 4 is an exploded, isometric view of the scissor lift assembly of the elevation mechanism shown inFIG. 1 . -
FIG. 5 is an exploded, isometric view of the sliding assembly of the elevation mechanism shown inFIG. 1 . -
FIG. 6 is an assembled, isometric view of a second embodiment of an elevation mechanism. -
FIG. 7 is an assembled, isometric view of a third embodiment of an elevation mechanism. - Referring to
FIGS. 1 and 2 , a first embodiment of anelectronic device 100 as disclosed includes abase assembly 10, ascissor lift assembly 20, asliding assembly 30, aplatform 40, and adrive device 50. Thescissor lift assembly 20 movably interconnects thebase assembly 10 and thesliding assembly 30. Theplatform 40 is positioned on thesliding assembly 30. Thedrive device 50 is connected to thebase assembly 10 to drive thescissor lift assembly 20. - Referring to
FIG. 3 , thebase assembly 10 includes twosupport members 11, a threadedrod 12, two threadedmembers 13, twoguide rods 14, two pairs ofsleeves 15, and two slidingmembers 16. Two ends of the threadedrod 12 correspondingly pass through the twosupport members 11. The threadedrod 12 is sleeved with the two threadedmembers 13. The twoguide rods 14 are fixed between the twosupport members 11, parallel to the threadedrod 12. Each of theguide rods 14 are sleeved with one pair of thesleeves 15. The two slidingmembers 16 are fixed to the two threadedmembers 13, and attached on the two pairs ofsleeves 15 correspondingly. The two slidingmembers 16 are slidable relative to the threadedrod 12 and theguide rods 14. - Each
support member 11 includes abase 113 and a connectingportion 115. The connectingportion 115 extends from a middle portion of a side surface of thebase 113 outward. Thebase 113 defines two throughholes 1131 and twoslots 1132 in opposite ends of thebase 113. The twoslots 1132 communicate with the corresponding throughholes 1131. The connectingportion 115 defines astepped hole 1151 in a middle portion of theconnection portion 115. - The threaded
rod 12 includes amain body 121 and two threadedportions portions main body 121. Rotation in a forward direction of the threadedportion 123 is opposite to that of the threadedportions 124. The two threadedmembers 13 threadedly engage with the corresponding threadedportions - Each
sleeve 15 includes abarrel portion 151 and afixing portion 152. Thefixing portion 152 connects an end of thebarrel portion 151. - Each sliding
member 16 includes a baseplate 161 and two connecting portions 162. The two connecting portions 162 are fixed to opposite ends of a side of baseplate 161. The threadedmember 13 is fixed to the baseplate 161 between the two connecting portions 162. Each connecting portion 162 defines a throughhole 1621 in a middle portion of each connecting portion 162. Each connecting portion 162 further defines agap 1622 in an end of each connecting portion 162. Thegap 1622 communicates with the throughhole 1621. Thesleeves 15 are received in theguide rods 14 in the corresponding throughholes 1621 of the slidingmember 16. - Referring to
FIG. 4 , thescissor lift assembly 20 includes a plurality of scissor supports 21, two first connectingmembers 22, twosecond connecting members 23, twofixing members 24, a plurality ofsprings 25, and a plurality offixing shafts 26. The scissor supports 21 are pivotedly connected to one another. The fixingshafts 26 correspondingly pass through the first connectingmember 22 and the second connectingmember 23, and are finally fixed to the fixingmembers 24. The fixingshafts 26 are sleeved with the corresponding springs 25. Fixingshafts 26 may be rivets, bolts, screw fasteners, or other. - Each
scissor support 21 includes two first scissor legs 212, asecond scissor leg 214, and apivotal shaft 216. Thesecond scissor leg 214 is positioned between the two first scissor legs 212. Thepivotal shaft 216 passing through a middle portion of one of the first scissor legs 212, thesecond scissor leg 214, and the other first scissor leg 212 in that order. The outermost first scissor legs 212 of thescissor lift assembly 20 are correspondingly pivotedly connected to one of the first connectingmembers 22 and one of the second connectingmembers 23. The outermostsecond scissor legs 214 of thescissor lift assembly 20 are correspondingly pivotedly connected to the other first connectingmembers 22 and the other second connectingmembers 23. - Each first connecting
member 22 includes a fixing portion 221 and a connectingportion 223. The connectingportion 223 extends from a middle portion of the fixing portion 221 outward. The fixing portion 221 defines a plurality of the steppedholes 2213 and twopositioning steps 2215. The steppedholes 2213 are defined in a side of the fixing portion 221 at two sides of the connectingportion 223. The twopositioning steps 2215 are defined in opposite ends of the other side of the fixing portion 221 adjoining the side defining the stepped holes 2213. The connectingportions 223 are pivotedly connected to free end of the first outermost scissor leg 212. - Each second connecting
member 23 includes two fixingportions 231 and a connectingportion 233. The two connectingportions 233 extend from a middle portion of the fixingportion 231, and are spaced from each other. The fixingportion 231 defines a plurality of the steppedholes 2313 and twopositioning steps 2315. The steppedholes 2313 are defined in the side of the fixing portion 221 at two sides of the connectingportion 233. The twopositioning steps 2315 are defined in opposite ends of the other side of the fixingportion 231 adjoining the side defining the stepped holes 2213. The connectingportions 233 are pivotedly connected to free end of the outermostsecond scissor leg 214. - Each fixing
member 24 includes abase 242 and two positioning portions 244. The two positioning portions 244 extend from a side of thebase 242, and are spaced apart at the two ends of a side of thebase 242. The two positioning portions 244 of one fixingmember 24 engage with thecorresponding positioning steps 2215 of the first connectingmember 22. The two positioning portions 244 of other fixingmember 24 engage with thecorresponding positioning steps 2315 of the second connectingmember 23. - Each
spring 25 is substantially cylindrical, and is partially received in the respective steppedhole 2213 of the first connectingmember 22 or the respective steppedhole 2313 of the second connectingmember 23. - Referring to
FIG. 5 , the slidingassembly 30 includes two slidingrods 31, two pairs ofsleeves 32, two slidingmembers 33, and two fixingmembers 34. The two slidingrods 31 are fixed between the two fixingmembers 34, parallel to each other. The two slidingrods 31 are correspondingly sleeved with two pairs ofsleeves 32. The two slidingmembers 33 are correspondingly sleeved with the two pairs ofsleeves 32, and can be slid relative to the slidingrods 31. - Each
sleeve 32 includes abarrel portion 321 and a fixingportion 323. The fixingportion 323 connects thebarrel portion 321. Each slidingmember 33 defines two throughholes 331 in opposite ends of the corresponding slidingmember 33. Thebarrel portions 321 are received in the corresponding throughholes 331 of the slidingmembers 33. Each fixingmember 34 defines two fixingholes 341 and twoslots 342 in opposite ends of the corresponding fixingmember 34. The twoslots 342 communicate with the corresponding throughholes 341. - In the illustrated embodiment, the
drive device 50 is an actuator motor. Thedrive device 50 is pivotally connected to and rotates the threadedrod 12. - Referring to
FIGS. 2 through 5 , theelevation mechanism 100 may be assembled as follows. - Two threaded
portions rod 12 are first sleeved with the threadedmembers 13. The twoguide rods 14 are then correspondingly sleeved with the correspondingsleeves 15. The two ends of the twoguide rods 14 are fixed in the corresponding throughholes 1131 of the twosupport members 11. The two ends of the threadedrod 12 are received in the corresponding steppedholes 1151 of the twosupport members 11. The baseplates 161 of the two slidingmembers 16 are fixed to the corresponding threadedmembers 13. The connecting portions 162 of the two slidingmembers 16 sleeved the correspondingsleeves 15. - The plurality of scissor supports 21 are pivotedly connected to one another. The two first connecting
members 22 are correspondingly pivotedly connected to free end of the outermost first scissor legs 212 of thescissor lift assembly 20. The two second connectingmembers 23 are correspondingly pivotedly connected to free end of the outermostsecond scissor legs 214 of thescissor lift assembly 20. Some of the fixingshafts 26 correspondingly pass through the lowermost first connectingmember 22 of thescissor lift assembly 20, thesprings 25, and the fixingmember 24. Theother fixing shafts 26 correspondingly pass through the lowermost second connectingmember 23 of thescissor lift assembly 20, thesprings 25, and the fixingmember 24. The lower ermost first and second connectingmember scissor lift assembly 20 can be slid relative to the fixingmembers 24, and resist thesprings 25. - The two pairs of
sleeves 32 are sleeved with the corresponding slidingrods 31. The two slidingmembers 33 are sleeved with the correspondingsleeves 32. The two ends of the two slidingrods 31 are fixed in the corresponding fixingholes 341 of the two fixingmembers 34. - Finally, the two fixing
members 24 of thescissor lift assembly 20 are fixed to the corresponding slidingmembers 16 of thebase assembly 10. The two slidingmembers 33 of the slidingassembly 30 are correspondingly fixed to the uppermost first and second connectingmember scissor lift assembly 20. Theplatform 40 is fixed to the two fixingmembers 34 of the slidingassembly 30. - When the
drive device 50 rotates the threadedrod 12 in a clockwise direction, the two threadedmembers 13 slide the threadedrod 12 toward each other. An angle of the first scissor leg 212 relative to thesecond scissor leg 214 of thescissor lift assembly 20 is decreased, such that thescissor lift assembly 20 raises theplatform 40. When thedrive device 50 rotates the threadedrod 12 in a counterclockwise direction, the two threadedmembers 13 slide the threadedrod 12 away from each other. The angle of the first scissor leg 212 relative to thesecond scissor leg 214 of thescissor lift assembly 20 is increased, such that thescissor lift assembly 20 lowers theplatform 40. - The sliding
members 33 can be slid toward or away from each other, such that the support center of theplatform 40 does not deviate when supporting heavy loads. In addition, the threadedrod 12 includes two threadedportions members 13, which in turn drive thescissor lift assembly 30 to lift more quickly. Thesprings 25 on thecorresponding fixing shafts 26, resist the corresponding fixingmembers 24, and thus provide a resilient buffering force to thescissor lift assembly 20. - It is to be understood that the
guide rods 14, thesleeves 15 and the slidingmembers 16 can also be omitted, wherein the first scissor leg 212 and thesecond scissor leg 214 at the bottom of thescissor lift assembly 20 are pivotedly connected to the corresponding threadedmembers 13. The slidingmembers 33 can also be omitted, wherein the first scissor leg 212 and thesecond scissor leg 214 at the top of thescissor lift assembly 20 are pivotedly connected to the correspondingsleeves 32. The first connectingmembers 22 can also be the same as the second connectingmembers 23, in which case thescissor support 21 includes same numbers of first scissor leg 212 andsecond scissor leg 214. Slidingrod 31 can also be only singular, wherein the number ofsleeves 32 is two. - Referring to
FIG. 6 , a second embodiment of anelevation mechanism 200 differs from theelevation mechanism 100 only in the inclusion of a fixingframe 60. The fixingframe 60 includes abaseplate 61, asupport bracket 62, and twoguide rods 63. Thesupport bracket 62 is fixed to thebaseplate 61. The twoguide rods 63 fixedly interconnect thebaseplate 61 and thesupport bracket 62, and pass through theplatform 70. Theplatform 70 is slidable relative to guiderods 63. - Referring to
FIG. 7 , a third embodiment of aelevation mechanism 300 differs from the first embodiment of theelevation mechanism 100 only in thatscissor lift assembly 80 includes onlysingular scissor support 81, which includes afirst scissor leg 812 and asecond scissor leg 814 pivotedly connected to thefirst scissor leg 812, and an end of thesecond scissor leg 814 is pivotedly connected to one of thesupport members 87, and further in thatbase assembly 90 further includes ahandle 94 and only singular threadedmember 93. Thehandle 94 is fixed to the threadedrod 93, and rotates the threadedrod 93. - Finally, while the present disclosure has been described with reference to particular embodiments, the description is illustrative of the disclosure and is not to be construed as limiting the disclosure. Therefore, various modifications can be made to the embodiments by those of ordinary skill in the art without departing from the true spirit and scope of the disclosure as defined by the appended claims.
Claims (18)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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CN200910305539.7A CN101993016B (en) | 2009-08-12 | 2009-08-12 | Elevating mechanism |
CN200910305539 | 2009-08-12 | ||
CN200910305539.7 | 2009-08-12 |
Publications (2)
Publication Number | Publication Date |
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US20110037039A1 true US20110037039A1 (en) | 2011-02-17 |
US8500098B2 US8500098B2 (en) | 2013-08-06 |
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Application Number | Title | Priority Date | Filing Date |
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US12/609,295 Expired - Fee Related US8500098B2 (en) | 2009-08-12 | 2009-10-30 | Elevation mechanism |
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CN (1) | CN101993016B (en) |
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CN114560104A (en) * | 2022-02-28 | 2022-05-31 | 中国人民解放军空军工程大学 | Modular aviation maintenance device |
Also Published As
Publication number | Publication date |
---|---|
US8500098B2 (en) | 2013-08-06 |
CN101993016A (en) | 2011-03-30 |
CN101993016B (en) | 2014-07-09 |
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